1. Beijing Key Laboratory of Environmental Science and Engineering, School of Material Science and Engineering Beijing Institute of Technology Beijing 100081 China
2. School of Materials Xi'an University of Science and Technology Xi'an 710054 China
3. Shanghai Institute of Space Power-Sources Shanghai 200245 China
4. Advanced Technology Research Institute Beijing Institute of Technology Jinan 250300 China
5. Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081 China